Stacked-tape trapped-field superconducting magnets - Edging ahead?
Superconductor Science and Technology
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Durrell, J. (2022). Stacked-tape trapped-field superconducting magnets - Edging ahead?. Superconductor Science and Technology, 35 (7), 070502. https://doi.org/10.1088/1361-6668/ac5de2
Conventional permanent magnet materials, such as NdFeB, have remanent magnetisations which are intrinsically limited to less than 1.5T. Somewhat higher fields can be achieved using Halbach arrays  but progress in developing higher performance materials is challenging . Conversely, in a superconducting pseudo-permanent magnet the trapped magnetic field arises due to macroscopic transport currents flowing in what is essentially a single turn coil. Consequently, the maximum achievable trapped magnetic field scales with the radius of the magnet. Such pseudo-permanent superconducting trapped field magnets can exhibit trapped fields of over 17 T which have the potential to find wide applications .
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External DOI: https://doi.org/10.1088/1361-6668/ac5de2
This record's URL: https://www.repository.cam.ac.uk/handle/1810/337714
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